Alienware 5500ri-2 black screen

So over time there has been graphic problems. I have managed to finally get it to work. The motherboard/graphics ard instantly heats up and will not start without a fan constantly blowing on it. After leaving it alone for years I managed to pull it out and get it to work. After installing a new os on a new hdd, I could not download drivers but I still managed to get it to work. After a day of it having no problems, the computer bluescreened and now it will not start past a black screen with an infinite amount of beeps. There is no beep code what so ever. I have had this problem constantly before and it fixed itself after either a few beeps or changing ram sticks. Now nothing seems to get it out of this post failure.